The HAPI Shorts program is a series of weekly lunch time sessions that you can enjoy in the comfort of your office. Each weekly session will be a 30 to 40-minute presentation followed by questions and answers.
All sessions will be conducted via Zoom. The sessions are FREE but we ask that you registered. A list of session that have been conducted is shown after the list of speakers.
Watch for information about our HAPI Shorts sessions in our monthly newsletter, Facebook page, and website calendar (visit calendar to register).
For HAPI member companies only, if you have 3 or more people interested in a session, HAPI offers to do a special scheduled session for your staff; these would only be for sessions presented by Jon Young. To schedule a session, please contact Jon at 847-4274 or by email at jon@hawaiiasphalt.org
Follows is a description of the HAPI Shorts sessions:
Title: Agencies and Industry – Working Together For Success
Speaker: Kim Schofield, Technical Director, Washington Asphalt Pavement Association
The session will begin with a look at the asphalt industry from an agency perspective and an industry perspective. Kim will provide her firsthand experience as she has worked for the Washington DOT and currently is the technical director for the Washington Asphalt Pavement Association. She will end the session by sharing her experience with successful collaborations between Washington DOT and industry.
Title: Building Blocks For Financial Success
Speaker: Spencer Dung, Managing Director/Wealth Management Advisor, WestPac Wealth Partners
Spencer will provide a Financial Strategy, Tax Planning, and Market Update. What opportunities are available to employees and business owners? What changes are currently being discussed in both Hawaii, and on the Federal Level?
Title: Career Insights to Effective Leadership
Speaker: Lori M.K. Kahikina, P.E. Executive Director, and CEO Honolulu Authority for Rapid Transportation
Lori has learned that you never stop learning. In this session Lori will share her career insights about 1) Leadership and Management Style, 2) Thriving in the Industry, and 3) Establishment of Internal Culture. She will share practical insights and candid personal real-life examples from her career that have taken her from an engineer at a local engineering consulting firm to her current position as the HART Executive Director and CEO.
Title: Design Considerations for Parking Lots
Speaker: Nathan Roberts, Division Manager, Scotty’s Contracting & Stone
Commercial and industrial asphalt paving can present unique challenges and differ significantly from conventional DOT projects. From plan and spec development to laydown procedures, commercial asphalt construction is often technically specialized and can be modified to meet a client’s desired pavement performance and budget. This session will cover plan and specification review, thickness designation, pavement constructability issues and QC/QA applicability for commercial paving projects with an emphasis on contractor perspective and input. The session will close with an evaluation and critique of two parking lot plans.
Title: Determining In-Place Density
Speaker: Brandon Lima, Executive Director, Hawaii Asphalt Pavement Industry
This session will provide a detailed overview of the primary methods for measuring asphalt pavement density: core sampling, nuclear gauge testing, and non-nuclear gauge testing. While standardized procedures aim to ensure consistency, identical results across different labs or devices are not guaranteed—even when the same methodology is followed. This presentation will examine the factors that contribute to variability and offer insights into interpreting and reconciling density measurements in the field and lab.
Title: Review of a JMF SubmittalSpeaker: Jon M. Young, Executive Director, Hawaii Asphalt Paving IndustryThe job mix formula (JMF) submittal is the mechanism to confirm that the mix being produced is in accordance with the project specifications. This session explains the information provided in a JMF submittal including solving the mystery of the 6 graphs. Learn about Voids in Mineral Aggregate (VMA), which is one of the most important elements of a mix design.
Title: Envision Rating System
Speaker: Jon M. Young, Executive Director, Hawaii Asphalt Pavement Industry
An overview of Envision rating system, that provides a consistent, consensus-based framework for assessing sustainability, resiliency, and equity in civil infrastructure.
Awarded road and airfield projects will be presented as an examples.
Title: GPR for In-Place Density
Speaker: Dr. Arudi (Raj) Rajagopal, President, Infrastructure Management and Engineering
The highway engineering community has been routinely using Ground Penetrating Radar (GPR) for many applications including: mapping type and thickness of pavement layers, detection of subsurface voids and subgrade moisture, deterioration in concrete pavements, rebar corrosion surveys, overlay debonding, etc. Recent investigations reveal potential of GPR to estimate density of newly placed asphalt layer. This presentation covers a review of recent and ongoing research, and a field experiment in Ohio to validate the applicability of GPR device for in-place density measurements.
Title: GPR for Pavement Thickness Determination
Speaker: Dr. Arudi (Raj) Rajagopal, President, Infrastructure Management and Engineering
Thickness of pavement layers is an important input for various routine activities such as: developing Pavement Management System, analysis of FWD data, overlay design, performance prediction, failure investigations and so on. Currently most agencies rely on core samples or sometimes the least historic documents. GPR is being used by many State DOTs and a few local agencies during the last decade to non-destructively collect pavement structure data. Several case studies are available comparing thickness of pavement layers from GPR and core samples. In this presentation, we compile a few case studies, reported margin of error and field variables affecting the results.
Title: HAPI Jeopardy
Host: Jon Young, HAPI
HAPI Jeopardy is a chance for you to test your knowledge of HAPI and the asphalt industry with a chance to win $15 in gift cards.
Players will be placed into three groups. Each group participated in the preliminary round with the same nine questions. The winner of the preliminary earns a $5 gift card, but more importantly advances to the final round that has twelve questions. The winner of the final round is crowded champion and earns a $10 gift card.
Title: Improving Asphalt with True WMA
Speaker: Bob Siffert, Business Development Manager, Evotherm, Ingevity
This session will highlight the long-term pavement performance benefits that are achievable when asphalt is produced at true warm mix temperatures (below 275°F). By simply reducing production temperatures, industry can reduce emissions, use less fuel, achieve better binder performance, reduce cracking and build roads that last longer. As we review field data from several projects based on Balanced Mix Design principles, attendees of this webinar will learn the science behind improving asphalt with WMA.
Title: Intro to Balanced Mix Design
Speaker: Jon M. Young, Executive Director, Hawaii Asphalt Pavement Industry
Balanced Mix Design (BMD) is coming soon to Hawaii. Working together, HDOT and HAPI, moving forward with the implementation.
BMD is an enhanced approach to designing asphalt paving mixtures to achieve a satisfactory balance between rutting resistance and crack resistance. It promises to result in longer lasting asphalt pavements.
This session will cover the basics of BMD and what’s happening in other states.
Title: Intro to High Friction Surface Treatments
Speaker: Jon M. Young, Executive Director, Hawaii Asphalt Pavement Industry
High-Friction Surface Treatment (HSFT) is not a new product, but it is something relatively new to streets and highways in Hawaii. What is a HFST, where is it used, and how is it installed? Learn how a HSFT improves the safety of the road.
Title: Intro to Open-Graded Mixes
Speaker: Jon M. Young, Executive Director, Hawaii Asphalt Pavement Industry
An Intro to Open-Graded Mixes will answer the following questions:
– What are open graded mixes?
– Differences from dense graded mixes?
– Where have they been used in Hawaii?
– Where could they be used in the future?
– What’s next?
Title: Intro to Oscillatory Compaction
Speaker: Brad Belvin, Sales & Marketing Manager, SAKAI
In this presentation you will learn about oscillatory compaction. Oscillatory rollers help improve productivity and create a smoother finish on challenging mixes. Oscillation works by using exciters to move the drum back and forward, rather than directing forces downwards as with a conventional vibratory drum. This method of compaction works well for thin HMA pavement surface layers less than 1.5 inches and HMA mixes with higher percentages of RAP. Oscillatory rollers may also be use where vibratory rollers are not typically allowed such as near hospitals and on bridge decks.
Title: Intro to Perpetual Pavements
Speaker: Jon M. Young, Executive Director, Hawaii Asphalt Pavement Industry
This session is an overview of the design of perpetual pavements. Since 2001, the APA’s Perpetual Pavement Award program has recognized over 150 long-life pavements in 31 U.S. states and one Canadian province. These roads were all at least 35 years old when honored and had never experienced a structural failure. To qualify, a road could not have had more than 4 inches of new material added over the previous 35 years, and it could not have been resurfaced more frequently than once every 13 years.
Title: Intro to Rejuvenators and RAP
Speaker: Hassan Tabatabaee, Global Technical Manager – Asphalt Solutions, Cargill
Use of rejuvenators in asphalt mixtures can allow for the increased use of RAP in asphalt mixes. In this session, you will learn:
– What is a rejuvenator?
– What is the difference between a rejuvenator and recycling agent?
– What states have been using rejuvenators to increase the usage of RAP?
– How is the dosage level determined?
– How does rejuvenators get incorporated into the mixes?
– What tests are used to measure the performance of the mixes (both lab, production, and in-place)?
Title: Intro to Stone Matrix Asphalt (SMA)
Speaker: Jon M. Young, Executive Director, Hawaii Asphalt Paving Industry
This session will introduce Stone Matrix Asphalt (SMA). SMA is a gap-graded hot mix asphalt (HMA) originally developed in Europe to maximize rutting resistance and durability. The mix design goal is to create stone-on-stone contact within the mixture. Since aggregates do not deform as much as asphalt binder under load, this stone-on-stone contact greatly reduces rutting.
Title: Intro to Void Reducing Asphalt Membrane
Speakers: Tim Zahrn, Specialty Products Area Manager and Todd Thomas, Technical Director–Specialty Products, both with Asphalt Materials, Inc.
Void Reducing Asphalt Membrane (VRAM) has been used to improve the performance of HMA longitudinal joints. In this session you will learn about VRAM and how it works to improve longitudinal joints. Topics include the technology behind VRAM, methods of application, and key specification items. The types of pavement surfaces and the various joint scenarios will also be discussed.
Title: Mat Defects – What Happened?
Speaker: Todd Mansell, Product Application Specialist, Caterpillar
View videos of mat defects and see if you can tell what’s happening. This session is intended a group discussion to learn from each other’s experiences.
Title: Milling 101
Speaker: Marty Burks, District Sales Manager, Wirtgen America
An introduction to milling and the important role it plays in asphalt paving. The selection and operation of milling machines for various applications will be discussed.
Title: Modified Binders 101
Speaker: Chris Lubbers, Technical Sales and Market Development Manager, Kraton Polymers US, LLC
In this session you will gain an understanding of the difference mixes that could be produced with a modified binder and what are the commonly used modifiers. The session will close with what modifier(s) is used in Hawaii and what agencies use mixes with modified binder.
Title: Pavement Distresses
Speaker: Mike Huner, Engineering Consultant, Huner Consulting, LLC
This session will discuss the FHWA’s LTPP Distress Identification Manual. Attendees will learn the definitions/descriptions, severity levels, and how to measure the various distresses. It is not always possible to identify the causes of the distress by only an observation of the pavement surface. The session will note items that may be indicative of the cause.
Title: Pavement Technologies in Hawaii
Speaker: Jon M. Young, Executive Director, Hawaii Asphalt Paving Industry
In recent years, HDOT Highways Division has added the use of PMA and SMA to the tool box of asphalt mixes. They are doing a project with mixes that use a plastic additive and mixes with 50% RAP.
Join us to learn more about these technologies and what HDOT has in store for the future.
Title: Pavement Treatments Used in Hawaii
Speaker: Jon M. Young, Executive Director, Hawaii Asphalt Paving Industry
Pavement treatments used in Hawaii was discussed at 2021 LTAP workshop for the counties and HDOT. This session summarizes the presentations made by representatives of the four counties and HDOT. Each presentation provided an overview of the agencies approach to pavement preservation.
Title: PaveXpress for Porous Asphalt Design
Speaker: Jon M. Young, Executive Director, Hawaii Asphalt Paving Industry
This session will be an overview of PaveXpress and PaveInstruct, followed by the design of a porous asphalt section.
PAVExpress is a free web-based pavement design tool available for use by local agencies, engineers, and architects who need a reliable way to quickly determine the necessary pavement thickness for a given section of roadway or project.
The PAVEInstruct learning module is a web-based pavement design education system with video instruction by leading industry experts. PAVEInstruct accompanies PAVEXpress.
Title: Paving Equipment – Mat Defects
Speaker: Todd Mansell, Product Application Specialist, Caterpillar
Meeting and exceeding asphalt construction specifications on field projects relies on proper paving equipment maintenance, setup, and operation. This session will focus on what to look for on the paving equipment when you see mat defects.
Title: Plastics (fishnets) in Pavements
Speaker: Cara Megill, Senior Research Assistant, Hawaii Pacific University Center for Marine Debris Research
The Hawaiian Islands are a hotspot for plastic debris, posing threats to marine organisms, coral reef habitat, and damaging the aesthetic natural landscape. The majority of plastic debris reaching the Hawaiian Islands is in the form of foreign derelict fishing gear (DFG) consisting mostly of high-density polyethylene (HDPE) plastic. To mitigate the negative impacts of DFG, Hawai’i Pacific University’s Center for Marine Debris Research (CMDR), along with numerous student volunteers and other collaborators, remove approximately 200 tons of DFG from the Hawaiian archipelago per year. Through the deployment of their own fisherman bounty program, the CMDR has removed approximately 2.6 metric tons of DFG since September 2022. The CMDR continues to sort and stockpile the HDPE DFG to study the feasibility and environmental impacts of recycling post-consumer plastic and DFG into asphalt roads in an effort to move towards a more circular economy for plastic debris in Hawaii. Currently, through a multi-organizational collaboration with the Hawaii Department of Transportation, the CMDR is testing microplastic and plastic additive leaching from asphalt paved with recycled plastics. The National Institute of Standards and Technology (NIST) and HPU’s CMDR are on the cutting edge of method development for environmental microplastic and chemical measurements. This presentation will highlight the preliminary results of the identification and quantification of microplastics within water samples from the asphalt performance test, Moisture Induced Sensitivity Test (MIST), and discuss how these results, results to come, and future studies will provide more understanding and information on the potential of recycling plastics into roadways.
Title: Review of a JMF Submittal
Speaker: Jon M. Young, Executive Director, Hawaii Asphalt Paving Industry
The job mix formula (JMF) submittal is the mechanism to confirm that the mix being produced is in accordance with the project specifications. This session explains the information provided in a JMF submittal including solving the mystery of the 6 graphs. Learn about Voids in Mineral Aggregate (VMA), which is one of the most important elements of a mix design.
Title: Seven Things You Should Understand About Quality Assurance
Speaker: Danny Gierhart, P.E., Deputy Director of Engineering, Asphalt Institute
Learn about the importance of quality assurance for constructing quality asphalt pavements. Attendees will learn what goes into a good quality control plan, from sampling of materials to the parameters typically monitored, to lab and field testing, to data analysis of results. Session outline is as follows:
• The Basics of Quality Assurance
• Quality Control Plan
• Sampling Methods for Asphalt Mixtures
• Testing Methods for Asphalt Mixtures
• Plant Production Quality Control Data Analysis
• Placement Quality Control Data Analysis
• Acceptance Tests and Acceptance Criteria
Title: Smoothness 101
Speaker: Nick Schaefer, Profiling Systems Engineer, Surface Systems and Instruments, Inc.
Our HDOT has a smoothness specification for construction of new and resurfacing of existing asphalt paved roads. This session is an introduction to smoothness and will cover:
– What is pavement smoothness
– What affects pavement smoothness
– Key terms used such as IRI and MRI
– Equipment used to measure smoothness
– Specification limits
– Correcting deficiencies (i.e., grinding)
– How to approach a smoothness project from bid time through start of construction
Title: Social Security Workshop
Speaker: Owen Yamamura, Financial Planner and CEO, Pacific Capital Investments
In this session, learn how to get more money and benefits from your social security:
– Strategies to increase income and benefits from your Social Security.
– Why Social Security will be there for you.
– What the spousal benefit can be worth to you.
– How to find the strategy that may get you the most in benefits.
– How to take advantage of the restricted application.
– If you already started, learn how to fix a mistake.
Title: Specifying Asphalt Pavement Mixes
Speaker: Jon M. Young, Executive Director, Hawaii Asphalt Paving Industry
It is important that the desired asphalt mix gets specified on the plans and in the specifications. This presentation reviews aggregate gradations and binders used in Hawaii and how they are shown in the plans and specifications.
Title: Use of Color in Communications
Speaker: Jon M. Young, Executive Director, Hawaii Asphalt Paving Industry
– Suggestions for emails and status reports that make it easy for the recipients to read, understand, and respond.
– Suggestions for emails for your consideration. These are suggestion that Young has found to be helpful based on his many years of experience.
– Use of color in communications that help direct the reader to highlights of the material being provided.
Title: Use of Recycled Materials in Pavements
Speaker: Jon M. Young, Executive Director, Hawaii Asphalt Paving Industry
Can Hawaii construct “sustainable roads” using waste tires, plastic, glass and old road pavement likely bound for landfill? Join us to learn about these potential recyclable materials and the status of their use in asphalt pavements on the mainland in Hawaii.
Title: You be the inspector!
Speaker: Jarrett Welch, Consultant, Quality Paving Consultants
In this session, you are the inspector at paving project site. The participants will view short (30-120 second) videos of various paving situations. After viewing each video, a group discussion moderated by the instructor will be conducted about the situation shown in the video.
Each session will feature different videos.
Please send any suggestions you have for topics to Brandon Lima at brandon@hawaiiasphalt.org.
Presenter’s bio
Speaker: Dr. Arudi (Raj) Rajagopal
Position: President, Infrastructure Management and Engineering
Dr. Arudi (Raj) Rajagopal is the president of Infrastructure Management and Engineering, a company that specializes in pavement design, evaluation, and management related programs. He was formerly a Faculty of Civil Engineering at the University of Cincinnati for over 12 years and University of Mississippi for 2 1/2 years. Dr. Rajagopal has published numerous articles and reports. He has used GPR for pavement type and thickness determination, to detect underground utilities, pavement structural analysis along with FWD etc. Dr. Rajagopal has served as Principal Investigator for several Ohio DOT research contracts including the one to investigate the applicability of GPR to measure asphalt density.
Contact Info: (513) 826-4338 | raj@inframeinc.com
Speaker: Bob Siffert
Position: Business Development Manager, Evotherm, Ingevity
Bob has been involved in the pavement maintenance and pavement reconstruction industry for over two decades. The first half of his career was spent resurfacing and rebuilding roads on the contracting side of the industry. Over the past 10 years, Bob’s focus with Ingevity has shifted to warm mix asphalt, liquid anti-strips and rejuvenators. He’s passionate about sharing his expertise to help contractors and DOT partners build more sustainable, longer lasting, higher quality asphalt pavements.
Contact Info: (208) 999-2555 | bob.siffert@ingevity.com
Speaker: Brad Belvin
Position: North American Sales and Marketing Manager, Sakai America
is the North American Sales and Marketing Manager for Sakai America based out of the corporate headquarters in Adairsville, Georgia. He received his Bachelor’s degree in Music Education from Berry College in Rome, Georgia.
Brad has been in the construction industry since 2015, and with Sakai since 2018. He has taken his passion for education and transitioned the skills from teaching involved musical concepts over to compaction best practices for contractors and dealers across North America. Brad consults regularly with compaction and paving experts within Sakai, both domestic and internationally. He has traveled all across the US giving presentations to contractors and dealers on how to improve compaction practices utilizing unique concepts to achieve density and rideability.
Contact Info: (724) 309-4391 | brad.belvin@sakaiamerica.com
Speaker: Brandon Lima
Position: Executive Director, Hawaii Asphalt Paving Industry
Brandon Lima began as the executive director in 2025. Previous to that he served as the Bituminous Mixture & Binder Supervising Technician for the Hawaiʻi DOT’s Materials Testing & Research Branch. He previously spent over a decade in asphalt quality-control operations for Grace Pacific, one of the state’s largest paving contractors—experience that gives him a unique, dual agency-and-contractor perspective on pavement quality and innovation.
Contact Info: (808) 620-4797 | brandon@hawaiiasphalt.org
Speaker: Cara Megill
Position: Senior Research Assistant, Hawaii Pacific University Center for Marine Debris Research
Cara Megill is the Senior Research Assistant at Hawai’i Pacific University’s Center for Marine Debris Research. Cara graduated from Hawai’i Pacific University with a Master’s of Science in Marine Science in the spring of 2023. Her master’s thesis was completed at the CMDR assessing plastic additives found within recycled post-industrial plastic and derelict fishing gear intended for use in asphalt roads, as a part of the CMDR’s current collaborative project with HDOT. Her current research is an extension of her master’s research and involves developing methods to quantify an array of plastic additives within different compartments of the marine environment and quantifying the plastic additives leaching from asphalt containing recycled plastic. Her interests include marine science, polymer chemistry, and materials science and engineering.
Contact Info: ( ) | cmegill@my.hpu.edu
Speaker: Chris Lubbers
Position: Technical Sales and Market Development Manager, Kraton Polymers US, LLC
Chris Lubbers currently serves as technical sales and market development manager for emulsions in Kraton Polymers’ Paving and Roofing business unit headquartered in Houston, TX. He received a B.S in Chemical Engineering from Ohio University and an M.S in Chemical Engineering from the University of Notre Dame.
Chris has spent the past sixteen years in the asphalt industry, primarily focused on polymer-modified emulsions and hot-mix paving binders as well as polymer-modified roofing membranes. He is an active member of AI, AEMA, AMAP, and the various regional pavement preservation partnerships (PPP’s) and user-producer groups (UPG’s).
Contact Info: (936) 524-9262 | Chris.Lubbers@kraton.com
Speaker: Danny Gierhart
Position: Deputy Director of Engineering, Asphalt Institute
Danny Gierhart, P.E., is the Asphalt Institute’s Deputy Director of Engineering. Previously, he served 13 years as AI’s Southeastern Regional Engineer. He earned his Civil Engineering degree from the University of Oklahoma in 1985, and has been a registered professional engineer since 1990. He has had a diverse career, working in industry, agency, and academia. He worked 20 years with the Oklahoma DOT, primarily as ODOT Bituminous Engineer. He spent 4 years in industry as Materials Engineer for Broce Construction Company. He also served the College of Engineering at the University of Oklahoma for 11 years as an adjunct instructor.
Contact Info: (405) 210-7421 | dgierhart@AsphaltInstitute.org
Speaker: Gary Fitts
Position: Manager, Market Development, Kraton Polymers US, LLC
Gary Fitts is a registered professional engineer in Texas, with BSCE and M.S. Eng. degrees from the University of Texas at Austin. Gary has been in the asphalt/pavement engineering field for almost 40 years and currently works with industry and agencies to promote highly modified asphalt, the next generation of polymer modified binders for paving applications. Before joining Kraton in 2019, Gary worked with Shell Bitumen as a Technology Applications Specialist and the Asphalt Institute as a Senior Regional Engineer.
Contact Info: (210) 381-6922 | Gary.Fitts@kraton.com
Speaker: Hassan Tabatabaee
Position: Global Technical Manager – Asphalt Solutions, Cargill
Hassan is the Global Technical Manager – Asphalt Solutions at Cargill responsible for research and development of bio-based specialty chemicals, with special focus on asphalt rejuvenators and rheology modifiers, adhesion promoters, and emulsion systems. His publications and reports cover a broad range of topics, especially the development of characterization methods and models for assessment of modified asphalt performance and distress mechanisms. He received his Ph.D. degree in Civil Engineering from the University of Wisconsin Madison, after completing his MS and BS degrees at Sharif University of Technology.
Contact Info: (763) 203-2258 | Hassan_Tabatabaee@cargill.com
Speaker: Jarrett Welch”
Position: Consultant, Quality Paving Consultants
Jarrett Welch is the President of Quality Paving Consultants. With over two decades of experience in the asphalt paving and construction business, he has become recognized as an expert and leader in the industry. Jarrett is well versed in aggregates, mixture designs, production and placement of asphalt pavement and new technologies. During his career he has assisted in the development and implementations of several specifications, writes for publications, and currently serves on many state and national committees.
Speaker: Jennifer Lynch
Position: Research Biologist, National Institute of Standards and Technology and Co-Director, Hawaii Pacific University’s Center for Marine Debris Research
Dr. Jennifer Lynch’s research interests are to improve measurement methods in the field of ocean plastic pollution. She has worked for the National Institute of Standards and Technology since 2003, and became the Co-Director of the Hawaii Pacific University (HPU) Center for Marine Debris Research (CMDR) in 2019. The CMDR was purposefully established in Hawaii, one of the most plastic polluted marine environments. Dr. Lynch’s research focuses on developing optimal methods to quantify and chemically characterize plastic marine debris to answer questions about pollution sources, fate, transport, and effects. She has authored 61 peer-reviewed publications and four book chapters.
Contact Info: (843) 442-2188 | jennifer.lynch@nist.gov
Speaker: Jon M. Young
Position: Executive Director, Hawaii Asphalt Paving Industry
Jon Young has been the Executive Director of HAPI for over 9 years. Previous to that he spent 10 years as a Senior Project Manager at Belt Collins Hawaii (BCH). Before BCH he spent 10 years as the Design and Construction Site Development Manager for Gentry Homes, Ltd. His experiences have provided him the ability to see projects from the designer, contractor, and owner perspective.
Contact Info: (808) 754-2931 | jon@hawaiiasphalt.org
Speaker: Kim Schofield
Position: Technical Director, Washington Asphalt Pavement Association
Kim Schofield, PE, is the Technical Director at the Washington Asphalt Pavement Association and holds a Master of Civil Engineering degree from the University of Washington and a Bachelor of Science in Engineering Physics from Pacific Lutheran University. She is a registered professional engineer. Kim joined the Washington Asphalt Pavement Association beginning January 2023.
Prior to that, her professional experience included 28 years at the Washington State Department of Transportation (WSDOT). Kim began working in the Hot-Mix Asphalt (HMA) lab and has experience building and designing HMA mix designs as well as mix design, binder and emulsion testing. Her experiences also include pavement design, pavement management, research and life cycle cost analysis.
Her duties as the State Pavement Management Engineer included Falling Weight Deflectometer testing, friction testing and pavement distress data collection and reporting. Kim also managed and performed research for pavements and materials, among other engineering fields. Part of her tenure at WSDOT included managing the strategic pavement preservation program for WSDOT’s Maintenance Program, which included conducting hands-on training. She closed out her career at WSDOT as the State Pavement Engineer, responsible for designing and managing the vast state-owned pavement network.
Throughout her time at WSDOT, she worked closely with Industry, Contractor, Consultant and Local Agency staff to ensure policy, specifications and research benefitted the pavement industry as a whole. Collaboration and strong partnerships were critical to the success and forward movement of the industry.
Contact Info: (360) 561-4271 | Kim.Schofield@asphaltwa.com
Speaker: Lori M.K. Kahikina, P.E
Position: Executive Director, and CEO Honolulu Authority for Rapid Transportation
Lori Kahikina serves as the Executive Director and CEO of the Honolulu Authority for Rapid Transportation (HART). She oversees the design and construction of the Honolulu Rail Transit Project, the nation’s first automated commuter rail system.
Previously, Kahikina held the position of Director of Environmental Services for the City and County of Honolulu. In this role, she managed the City’s wastewater and solid waste programs, including a $5 billion federally mandated consent decree wastewater program project. Kahikina is a proud graduate of Kamehameha Schools and the University of Hawaii, holding a Bachelor of Science degree in Mechanical Engineering. She is also a licensed Civil Engineer.
Contact Info: (808) 768-6262 | lkahikina@honolulu.gov
Speaker: Marty Burks
Position: District Sales Manager, Wirtgen America
Marty Burks been in the asphalt paving business since 1977 and the asphalt milling business since 1986. he has have been involved with maintenance, operation, application and design of asphalt pavers and milling machines. Marty has been employed at the Wirtgen Group since 1995.
Contact Info: (916) 801-6079 | Marty.Burks@wirtgen-group.com
Speaker: Mike Huner
Position: Engineering Consultant, Huner Consulting, LLC
Michael (Mike) Huner has worked for more than 25 years in various aspects of the asphalt industry ranging from Research & Testing to Field Engineering to Technical Services. He spent the first seven years of his professional career working for the National Center for Asphalt Technology at Auburn University, while simultaneously earning a Master’s degree in Pavement Materials. He spent the next five years as a Field Engineer for the Asphalt Institute, and then two more with an asphalt materials company, SemMaterials. Finally, before starting his current consulting business, he spent five years as the Technical Services Director for the Asphalt Division of the Tennessee Road Builders Association. Mike holds both a Bachelor’s and a Master’s degree in Civil Engineering and is a registered professional engineer in the states of Alabama and Tennessee.
Contact Info: (615) 477-5079 | mike@hunerconsulting.com
Speaker: Nathan Roberts
Position: Division Manager, Scotty’s Contracting & Stone
Nathan Roberts is a registered Professional Engineer in Kentucky and earned his Bachelor of Science Degree in Civil Engineering from Western Kentucky University in 2010. He began his career in the asphalt industry in 2009, working for Scotty’s Contracting & Stone as an intern in the Quality Control Lab. Since then, he has held various positions within the company, including estimator, project manager and area manager. He is currently the Division Manager of Bowling Green Paving and oversees a team of estimators and project managers on various commercial and DOT projects.
Contact Info: (270) 784-5729 | NathanR@ScottysContracting.com
Speaker: Nick Schaefer
Position: Profiling Systems Engineer, Surface Systems and Instruments, Inc.
Nick has worked in the smoothness industry for over 11 years. He has developed custom profiling systems and been a primary on‐site support contact for contractors and DOT operators. Over the years he has assisted and commented on numerous State DOT specification revisions and is very active in Hawaii. Mr. Schaefer is a graduate of University of California, Davis and is a registered Civil Engineer in California.
Contact Info: (415) 595‐5302 | nschaefer@smoothroad.com
Speaker: Owen Yamamura
Position: Financial Planner and CEO, Pacific Capital Investments
Owen is a Financial Planner and CEO of Pacific Capital Investments in Honolulu, HI. He has been serving clients in pursuit of their financial goals for over 25 years. Owen has conducted seminars across the island for Hawaii Teacher’s Associations, Lion’s Club, a credit union and other civic organizations.
Contact Info: (808) 545-2225 | oyamamura@rr.firstallied.com
Speaker: Spencer Dung
Position: Managing Director/Wealth Management Advisor, WestPac Wealth Partners
Spencer was born and raised in Honolulu, graduating from Punahou and UC San Diego with a BA in Economics. As a 3rd generation financial planner, he joined WestPac Wealth Partners in San Diego, before returning to Hawaii to be the Managing Director. Spencer is a member of the Friends of the UH Cancer Center Board and Make-A-Wish Hawaii’s Young Leaders Board. Spencer is a Certified Financial Planner®, a Court of the Table Member of the Internationally recognized Million Dollar Round Table, and an active member of the National Association of Insurance and Financial Advisors.
Contact Info: (808) 707-8488 | spencer.dung@westpacwealth.com
Speaker: Tim Zahrn
Position: Specialty Products Area Manager, Asphalt Materials, Inc.
Tim has been with AMI since 2017 and his current responsibilities are to lead and support the use and growth of specialty asphalt products, including and J-Band and engineered emulsions for cold recycling.
Tim’s previous work experience includes 21 years with the Illinois Department of Transportation in various engineering positions including construction, design, operations, and local roads. He most recently completed 12 years as the Sangamon County Engineer in Springfield, Illinois, retiring from that position at the end of 2016.
Tim is a registered Professional Engineer in Indiana and Illinois. He enjoys traveling and spending time with family and an occasional round of golf.
Contact Info: (217) 494-3563 | tzahrn@asphalt-materials.com
Speaker: Todd Mansell
Position: Product Application Specialist, Caterpillar
Todd has been in the asphalt paving and construction business for over 25 years, working as an asphalt laboratory and field technician, laboratory manager, field inspector, paving quality manager and quality control manager for both government and private employers in both Canada and the United States. He has a passion for quality paving and for testing new and innovative paving equipment, technology and paving practices.
Contact Info: (783) 447-5695 | mansell_todd@cat.com
Speaker: Todd Thomas
Position: Technical Director–Specialty Products, Asphalt Materials, Inc.
Todd is a registered professional engineer and is a graduate of Purdue University. He has worked in the asphalt industry since 1991. He has been in various roles, from product leader to laboratory manager to field engineer in the hot-mix asphalt, pavement preservation, and in-place recycling areas. He is currently the technical director of specialty products in Asphalt Materials, Inc. in Indianapolis, Indiana and has been with the company since 2018.
Contact Info: (973) 610-2260 | tthomas@asphalt-materials.com
2025 Sessions:
– 07/09/25: No session
– 07/02/25: Intro to Balance Mix Design
– 06/25/25: No session
– 06/18/25: Use of Recycled Materials in Asphalt Pavements
– 06/11/25: No session
– 06/04/25: Intro to Open-Graded Mixes
– 05/28/25: No session
– 05/21/25: No session
– 05/14/25: Social Security Workshop
– 05/07/25: No Session
– 04/30/25: Use of Color in Communications
– 04/23/25: No Session
– 04/16/25: Intro to Perpetual Pavements
– 04/09/25: No Session
– 04/02/25: No session (LTAP/HAPI Annual Paving Conference)
– 03/26/25: No session
– 03/19/25: No session
– 03/12/25: Public Speaking Tips
– 03/05/25: No Session
– 02/26/25: Seven Things You Should Understand About Quality Assurance
– 02/19/25: No Session
– 02/12/25: Intro to High Friction Surface Treatments
– 02/05/25: No Session
– 01/29/25: No Session
– 01/22/25: Design Considerations for Parking Lots
– 01/15/25: Specifying Asphalt Pavement Mixes
– 01/08/25: No Session
– 01/01/25: No Session
2024 Sessions:
– 12/25/24: No Session
– 12/18/24: No Session
– 12/11/24: HAPI Holiday Game
– 12/04/24: Intro to Stone Matrix Asphalt
– 11/27/24: No session
– 11/20/24: Milling 101
– 11/13/24: No session
– 11/06/24: No session
– 10/30/24: No session
– 10/23/24: No session
– 10/16/24: No session
– 10/09/24: No session
– 10/02/24: No session
– 09/25/24: Intro to Balance Mix Design
– 09/18/24: Pavement Technologies in Hawaii
– 09/11/24: No session
– 09/04/24: Intro to Road Building Technologies of Today
– 08/28/24: Use of Color in Communications
– 08/21/24: Career Insights to Effective Leadership
– 08/14/24: No session
– 08/07/24: No session
– 07/31/24: No session
– 07/24/24: HAPI Jeopardy
– 07/17/24: No session
– 07/10/24: Use of Recycled Materials in Asphalt Pavements
– 07/03/24: Design with Construction in Mind
– 06/26/24: No session
– 06/19/24: Mat Defects – What Happened?
– 06/12/24: No session
– 06/05/24: No session
– 05/29/24: Specifying Asphalt Pavement Mixes
– 05/22/24: No session
– 05/15/24: Social Security Workshop
– 05/08/24: No session
– 05/01/24: Intro to Balance Mix Design
– 04/24/24: No session
– 04/17/24: Agencies and Industry: Working Together for Success
– 04/10/24: Paving Technologies in Hawaii
– 04/03/24: No session
– 03/27/24: No session (LTAP/HAPI Annual Paving Conference)
– 03/20/24: Pavement Treatments Used in Hawaii
– 03/13/24: Intro to Perpetual Pavements
– 03/06/24: No session
– 02/28/24: Envision Rating System
– 02/21/24: No session
– 02/14/24: Intro to Rejuvenators and RAP
– 02/07/24: Use of Color in Communications
– 01/31/24: No session
– 01/24/24: No session
– 01/17/24: Building Blocks for Financial Success
– 01/10/24: Random Sampling Locations
– 01/03/24: No session
2023 Sessions:
– 12/27/23: No session
– 12/20/23: No session
– 12/13/23: Intro to Open Graded Mixes
– 12/06/23: HAPI Holiday Game
– 11/29/23: Design with Construction in Mind
– 11/15/23: Milling 101
– 11/01/23: Intro to Stone Matrix Asphalt
– 10/25/23: Pavement Technologies in Hawaii
– 10/18/23: Intro to Balance Mix Design
– 10/11/23: Public Speaking Tips
– 10/04/23: Envision Rating System
– 09/27/23: Specifying Asphalt Pavement Mixes
– 09/20/23: Intro to High Friction Surface Treatments
– 09/13/23: Pavement Treatments Used in Hawaii
– 09/06/23: Plastics (fishnets) in Pavements
– 08/30/23: No session
– 08/16/23: Building Block for Financial Success
– 08/16/23: No session
– 08/09/23: No session
– 08/02/23: Use of Color in Communications
– 07/26/23: No session
– 07/19/23: Random Sampling Locations
– 07/12/23: HAPI Jeopardy
– 07/05/23: Use of Recycled Materials in Asphalt Pavements
– 06/28/23: Intro to Perpetual Pavements
– 06/21/23: Review of a JMF submittal
– 06/14/23: Intro to Void Reducing Asphalt Membrane
– 06/07/23: No session – 2023 WASHTO Conference
– 05/31/23: No session
– 05/24/23: No session
– 05/17/23: Intro to Open-Graded Mixes
– 05/10/23: Intro to Oscillatory Compaction
– 05/03/23: Design with Construction in Mind
– 04/26/23: No session – Best Practices Workshops
– 04/19/23: Intro to Balance Mix Design
– 04/12/23: Intro to Stone Matrix Asphalt
– 04/05/23: Pavement Distresses
– 03/29/23: No session – Annual Paving Conference
– 03/22/23: Specifying Asphalt Pavement Mixes
– 03/15/23: Pavement Technologies in Hawaii
– 03/08/23: Use of Color in Communications
– 03/01/23: Envision Rating System
– 02/22/23: Intro to High Friction Surface Treatments
– 02/15/23: Pavement Treatments Used in Hawaii
– 02/08/23: No session
– 02/01/23: No session
– 01/25/23: Improving Asphalt with True WMA
– 01/18/23: Use of Color in Communications
– 01/11/23: Random Sampling Locations
– 01/04/23: No session
2022 Sessions:
– 12/28/22: No session
– 12/22/22: No session
– 12/14/22: Intro to Open Graded Mixes
– 12/08/22: Review of a JMF submittal
– 12/07/22: You be the inspector
– 11/16/22: Use of Recycled Materials in Pavements
– 11/09/22: Intro to Perpetual Pavements
– 11/02/22: Smoothness 101
– 10/26/22: HAPI Jeopardy
– 10/19/22: Intro to Balanced Mix Design
– 10/12/22: Intro to Stone Matrix Asphalt
– 10/05/22: Modified Asphalt 101
– 09/28/22: Specifying Asphalt Pavement Mixes
– 09/21/22: Use of Color in Communications
– 09/14/22: No session
– 09/07/22: No session
– 08/31/22: Intro to Rejuvenators and RAP
– 08/24/22: Intro to High Surface Friction Treatments
– 08/17/22: Building Blocks for Financial Success
– 08/10/22: Pavement Treatments Used in Hawaii
– 08/03/22: No session
– 07/27/22: Envision Rating System
– 07/20/22: Mat Defects – What Happened?
– 07/13/22: Review of a JMF Submittal
– 07/06/22: No session
– 06/29/22: Seven Things You Should Understand About Quality Assurance
– 06-22-22: Intro to Open Graded Mixes
– 06/15/22: Use of Recycled Materials in Pavements
– 06/08/22: Plastics (fishnets) in Pavements
– 06/01/22: Specifying Asphalt Pavement Mixes
– 05/25/22: Design with Construction in Mind
– 05/18/22: GPR for In-Place Density
– 05/11/22: Intro to Balanced Mix Design
– 05/04/22: Intro to Oscillatory Compaction
– 04/27/22: No session
– 04/20/22: Use of Color in Communications
– 04/13/22: Intro to Stone Matrix Asphalt
– 04/06/22: Session Canceled
– 03/30/22: Session Canceled
– 03/23/22: No session
– 03/16/22: No session
– 03/09/22: Session Canceled
– 03/02/22: Intro to High Friction Surface Treatments
– 02/23/22: Session Canceled
– 02/16/22: Envision Rating System
– 02/09/22: Pavement Treatments Used in Hawaii
– 02/02/22: Design with Construction In Mind
– 01/26/22: No session
– 01/19/22: No session
– 01/12/22: Session Canceled
– 01/05/22: Specifying Asphalt Pavements
2021 Sessions:
– 12/29/21: No session
– 12/22/21: No session
– 12/15/21: Use of Color in Communications
– 12/08/21: Session Canceled
– 12/01/21: Intro to Stone Matrix Asphalt
– 11/24/21: No session
– 11/17/21: Design with Construction in Mind
– 11/10/21: Intro to Rejuvenators and RAP
– 11/03/21: Session Canceled
– 10/27/21: No session
– 10/20/21: Session Canceled
– 10/13/21: You be the inspector!
– 10/06/21: Session Canceled
– 09/29/21: Session Canceled
– 09/22/21: Intro to Balanced Mix Design
– 09/15/21: Intro to Stone Matrix Asphalt
– 09/08/21: Session Canceled
– 09/01/21: Random Sampling Locations
– 08/25/21: Session Canceled
– 08/18/21: PaveXpress for Porous Asphalt Design
– 08/11/21: Intro to Perpetual Pavements
– 08/04/21: No session scheduled
– 07/28/21: Pavement Treatments Used in Hawaii
– 07/21/21: Intro to High Surface Friction Treatments
– 07/14/21: Use of Recycled Materials in Pavements
– 07/07/21: Use of Color in Communications
– 06/30/21: Design with Construction in Mind
– 06/23/21: Review of a JMF Submittal
– 06/16/21: Specifying Asphalt Pavement Mixes
– 06/09/21: Intro to Open-Graded Mixes
– 06/02/21: Pavement Treatments Used in Hawaii
– 05/26/21: Mat Defects – What Happened?
– 05/19/21: Intro to Balanced Mix Design
– 05/12/21: Intro to Stone Matrix Asphalt
– 05/05/21: Design with Construction in Mind
– 04/28/21: Intro to Perpetual Pavements
– 04/21/21: Pavement Distresses
– 04/14/21: Intro to High Friction Surface Treatments
– 04/07/21: Use of Recycled Materials in Pavements
– 03/31/21: Session Canceled
– 03/24/21: Intro to Void Reducing Membrane
– 03/17/21: Modified Binders 101
– 03/10/21: Intro to Open-Graded Mixes
– 03/03/21: Random Sampling Locations
– 02/24/21: Intro to Balanced Mix Design
– 02/17/21: GPR for Pavement Thickness Determination
– 02/10/21: You Be The Inspector
– 02/03/21: PaveXpress for Porous Asphalt Design
– 01/27/21: Specifying Asphalt Pavement Mixes
– 01/20/21: Use of Color in Communications
– 01/13/21: HAPI Meeting: Meet our 2021 Scholarship Recipients
– 01/06/21: Intro to Perpetual Pavements
2020 Sessions:
– 12/30/20: No session – Holiday
– 12/23/20: No session – Holiday
– 12/16/20: Intro to Stone Matrix Asphalt
– 12/09/20: GPR for In-Place Density
– 12/02/20: Smoothness 101
– 11/25/20: No session – Holiday
– 11/18/20: Intro to Balance Mix Design
– 11/11/20: No session – Holiday
– 11/04/20: Paving Equipment – Mat Defects
– 10/28/20: Specifying Asphalt Pavement Mixes
– 10/21/20: Intro to High Surface Friction Treatments
– 10/14/20: Pavement Distresses
– 10/07/20: Intro to Open Graded Mixes
– 09/30/20: You Be the Inspector
– 09/23/20: Intro to Perpetual Pavements
– 09/16/20: Intro to Stone Matrix Asphalt
– 09/09/20: Intro to Balance Mix Design
– 09/08/20: Random Sampling Locations
– 09/02/20: Modified Binders 101
– 08/26/20: Specifying Asphalt Pavement Mixes
– 08/19/20: Intro to Open Graded Mixes
– 08/12/20: Intro to Stone Matrix Asphalt
– 08/05/20: Intro to Balance Mix Design
– 07/29/20: Specifying Asphalt Pavement Mixes
– 07/22/20: Intro to Open Graded Mixes
